Milling attachment for lathes.



l H. PASCHALLI MILLING ATTACHMENT FOR LATHES.

APPLICATION HLED MAR. 29, W15.

,1 6,690. filt'fillted. Feb. 20, 1917.

VV/Mas'ms. 0mm M/W MM I i UNITED STATES PATENT OFFICE. v

JAMES H. IPASCHALL,

Speciflcationof Letters Patent.

OF LONG BEACH, CALIFORNIA, ASSIGNOR 0F ONE-HALF TO FRANK P. CLEARY, OFLONG BEACH, CALIFORNIA.

Patented Feb. 20, 1917.

Application filed March 29, 1915. Serial No. 17,710.

To all whom it may concern:

Be it known that I, JAMns H. PAsoHALL,

useful Improvements in Milling Attach-'- ments for Lathes, of which thefollowing is a specification.

This invention relates to attachments forlathes adapted for performingmilling operations and the like thereon; and the primary object of thisinvention .is the provision of a simple and efficient means which may bemanufactured and sold at low cost and which may be applied to anordinary lathe to perform milling operations of the character herein setforth. It is a particular object of this'invention to provide a latheattachment to enable the owner of a small shop to carry on millingoperations which are now'usually sent out of the small shops to be donewith a milling machine, or are performed in the small shops by hand witha great loss of efliciency.

The specific character of my invention will be apparent from thefollowing specification. In the accompanying drawings, I haveillustrated for the purpose of this specification, a specific andpreferred form of my milling attachment in which drawings, Figure 1 is aperspective illustrating my milling attachment as it appears in use on alathe, Fig. 2 is a side elevation of the attachment, Fig. 3 is avertical longitudinal section of the same, Fig. 4 is a rear elevation ofthe attachment, and Fig. 5 is a plan of the attachment. I

In the drawings a lathe carriage is illustrated at 10, having the usualtool supporting member 11 and tool posts 12. My attachment is mountedupon the member 11 in the manner'shown. The base member 13 of myattachment has preferably a pair of horizontally projecting prongs 14which are spaced apart so as to lie one on each side of the tool posts12; and a horizontal bar 15 placed in the tool osts is forced down onthe prongs 14, forcing their under surfaces to accurate and'tightengagement with the upper flat surface of the member 11. When the basemember 13 is held in this position, the attachment is accurately linedup. Spaced marginal ribs.21 are provided on the base member 13 extendingdownwardly from the inner ends of the prongs 14 and forming rightangular seating brackets therewith for engaging the adjacent corner 1 ofthe support 11.

The basemember 13 has a vertical face 16 against which the way member 17-is held. This way member 17 is mountedon a pivot 18, preferablycentrally located, and

is swingingly adjustable about its pivot 18 on the face 16. Slots 19extend through the base member 13, and bolts 20 through into the member17 and pass through the slots 19; and by loosening and tightening thesebolts, the member 17 may be thrown to and set in any desired angularposition. The,

lower bolt 20 is positioned between and protected by the said ribs 21.In its normal position, the member 17 is so situated that the ways 25thereon are vertical. The work holding member 26 engages in these waysand is vertically movable thereon, a screw 27 extending within a centralrecess 22 of the way member 17 and hand wheel 28 pro viding the meansfor moving the work carrying member to any desired position. The workcarrying member. has a. work clamp comprising a lower jaw 29stationarily mounted upon the member 26 and an upper jaw 30 adapted tobe pressed downwardly by a screw 31 which is mounted in the boss 32. Thework clamp is particularly designed for holding such articles as shafts,as shown at 30 in Figs. 1 and 2, holding these articles across the axesof the lathe to which the. attachment is mounted and holding them eitherin horizontal or in inclined positions. By properly adjusting theposition of the way member 17, the shaft 30*, for instance, may be heldeither horizontally or inclined above or below the horizontal, and forinstance, a key way of varying depth may becut in the shaft, or the endof the .shaft may be squared ofi to a 'taper, or may be flattened in anymanner desired. In fact, my attachment provides a relatively simplemeans, which may be easily attached to any lathe, enabling the operatorto perform such operations as herein indicated Without the expense ofmaintaining such a large and complicated and expensive machine as amilling machine.

Having described a preferred form of my invention, I claim! 1. Incombination, a base member having a pair of spaced horizontallyprojecting prongs and marginal spaced ribs angularly extending therefromadapted for removable attachment to a lathe carriage with the saidprongs and ribs incontact therewith, a vertical flat surface directly onsaid member at right angles to the axis of the lathe to which it isattached, a way member pivotally attached to said base member to beswingingly adjustable thereon about .said pivot and parallel to saidvertical face, slot and bolt connection between the base member and theWay member for holding the way member in any desired position, one ofthe bolts of said connections extending between the said ribs, verticalWaysdirectly .on said way member, a Work holding member slidable on saidways, means to move said work holding member on said ways,

and a work clamp directly mountedon said sliding member adapted to holda shaft or the like at right angles to said ways and parallel to saidvertical face on t l f8 base member.

2. A device of the character described consisting of a base memberhaving a pair of spaced horizontally projecting prongs adapted forremovable attachment tea lathe carriage by means of its tool post; a'vertical flat surface directly on said base member at right angles tothe lathe to which it is attached, a'way memberpivotally attachedcentrally directed to said base member against its said vertical face tobe swingingly,

adjustable about said pivot in the plane of said face, slot and boltconnections beta-eon v ing holding means on said slider consisting of aclamp member integral with and projectfrom the slider on its faceopposite the agement of said slider with said vertical s, said clampmember having a V-shaped notch extending horizontally at right angles tosaid vertical ways, and another clamp member movable on said slider toand from the first mentioned clamp member, said last mentioned clampmember also having a V-shaped notch extending horizontally at rightangles to said vertical ways and opposite the notch in said firstmentioned clamp member.

In witness that l: claim the foregoing I have hereunto subscribed. myname this 28rd day of March 1915..

JAMES- H. PASCHALL.

Witnesses FRANK P. CLEARY, linwoon H. BARKELEW.

